DieHard Marine Deep Cycle/RV Battery, Group Size 24M

Died right out of warranty September 06, 2011
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Used this battery over four months in a boat, but have had it for over a year. Just after one year, it all of a sudden refuses to hold a charge. We had to jump start it with a car just to get enough juice in it to turn the boat engine over once. Funny how other people have had this die after the warranty, isn't it?

27494 Deep-Discharge Power -- Everything I hoped for. June 24, 2011
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Bought this battery, and a model 71222 battery charger, just over six years ago. I've been using it to power an inverter feeding 120VAC to my CPAP machine, specifically for those summer-season (usually storm-related) Florida power-grid outages -- because without my CPAP machine, I don't sleep.

I drag out the whole assembly every spring, put a full charge on the battery (you learn to ignore the meter on the 71222, just go by charge-time), and sleep easier all summer. I believe the longest I went without power was almost three weeks, running the CPAP 7-8 hours per day, with no problem at all. That isn't counting also using it to charge cell phones, to power a small TV, etc. This battery is a real workhorse.

Biggest caution with the charger and inverter -- don't put the whole assembly into some nice neat enclosure withOUT providing for significant airflow cooling.

Good price, size and weight August 11, 2010
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Great little Marine Deep Cycle battery. Best price I have been able to find anywhere, and it is easy to install and carry. So far it is performing great, but the real test will be in a few seasons.

Price makes it a winner in my book, so if it continues to perform well, it is not only a good purchase, but a great one.

DEEP CYCLE M24 DIE HARD DIDNT HOLD UP July 19, 2010
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I HAD BOUGHT 2 OF THESE BATTERIES FOR MY CLASS A MOTORHOME IN JUNE OF 2009 AND EVEN WITH A TRICKLE CHARGE ON THEM WHEN IN STORAGE THEY WOULD NOT HOLD ANYMORE CHARGE BY JULY OF 2010. SINCE IT WAS OVER THE WARRANTY PERIOD BY 1 MONTH THE BEST I COULD GET THEM TO DO IS GET ANOTHER ONE FOR $40.00 EACH. THE ONLY REASON I WILL BUY MORE IS THESE ARE 10" LONG AND 3 JUST FITS IN THE BATTERY TRAY PERFECTLY. UNABLE TO FIND ANY OTHER DEEP CYCLE THIS SHORT.